# Codex Pass 06 — QA/QC and Exports

Task:
Implement QA/QC comparison against reference features and GeoJSON/CSV export.

Read:
- docs/QA_QC_SPECIFICATION.md
- docs/QA_QC_ENGINE.md
- docs/API_EXAMPLE_RESPONSES.md

Required:
- IoU matching.
- TP/FP/FN.
- Precision/recall/F1.
- GeoJSON export for detections and findings.
- CSV metrics export.

Acceptance:
- Expected QA metrics fixture passes.
- Exports are downloadable and recorded.